package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {

    @Before("@annotation(com.sky.annotation.AutoFill)")
    public void autoFill(JoinPoint joinPoint) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {

        //获取方法签名
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();



        AutoFill autoFill = signature.getMethod().getAnnotation(AutoFill.class);

        OperationType value = autoFill.value();

        //获取方法参数
        Object[] args = joinPoint.getArgs();

        if (args == null || args.length == 0){
            return;
        }
        Object arg = args[0];

        LocalDateTime now = LocalDateTime.now();
        Long id = BaseContext.getCurrentId();

        if (value == OperationType.INSERT){
            //添加操作
            Method setCreateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
            Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME,LocalDateTime.class);
            Method setCreateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER,Long.class);
            Method setUpdateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER,Long.class);

            setCreateTime.invoke(arg,now);
            setUpdateTime.invoke(arg,now);
            setCreateUser.invoke(arg,id);
            setUpdateUser.invoke(arg,id);


        }else {
            //更新操作
            Method setUpdateTime = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME,LocalDateTime.class);
            Method setUpdateUser = arg.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER,Long.class);

            setUpdateTime.invoke(arg,now);
            setUpdateUser.invoke(arg,id);

        }
    }

}
